What you see above is a master clock. It is the center of a system that can run an unlimited number of slave clocks, keeping them on-time thanks to its ability to synchronize with an atomic clock.

El Segundo, CA —ESE recently announced the introduction of its ES-150U master clock switcher. Master clock switchers are typically used with a primary master clock (“A”) and a secondary master clock ( ...

The fully-featured SPG8000 comes standard with individually timeable black burst (with VITC support) and HDTV tri-level sync outputs, linear time code (LTC) outputs and network time protocol (NTP) ...

In a first, the Indian Railways will develop a master clock system for synchronising time with the applications and systems across its network, with plans to demonstrate a prototype by Gandhi Jayanti ...